Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001SUBURBAN C1500REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 7 (AUTOMATIC TRANSMISSION - 4L80-E - UNIT REPAIR OVERHAUL)
2001 Chevrolet Suburban C1500
Section 7 (Automatic Transmission - 4L80-E - Unit Repair Overhaul)
2001 Chevrolet Suburban C1500SECTION Section 7 (Automatic Transmission - 4L80-E - Unit Repair Overhaul)
WARNING: This page is about a different variant/trim than selected.
- Specifications
- Component Locator
- Disassembled Views
- Case and Associated Parts (1 of 3)
- Case and Associated Parts (2 of 3)
- Case and Associated Parts (3 of 3)
- Oil Pump Assembly
- Control Valve Body Assembly (1 of 2)
- Control Valve Body Assembly (2 of 2)
- Accumulator Assembly
- Overrun Clutch Assembly
- Fourth Clutch Assembly
- Forward Clutch Assembly
- Direct Clutch and Intermediate Sprag Assembly
- Intermediate Clutch Plates and Manual 2-1 Band Assembly
- Center Support and Gear Unit Assembly
- Parking Lock and Actuator Assembly
- Automatic Transmission Electronic Component Views (Internal)
- Component Location
- Disassembled Views
- Transmission Overhaul
- Transmission Overhaul Sequence
- Torque Converter Assembly Removal
- Torque Converter End Play Inspection
- Transmission Holding Fixture Installation
- Transmission Fluid Draining
- Input and Output Speed Sensor Assembly Removal
- Case Extension Assembly Removal
- Transmission Fluid Pan Removal
- Transmission Fluid Filter Assembly Removal
- Transmission Wiring Harness Removal
- Control Valve Body Assembly Removal
- Manual 2-1 Band Servo Piston Assembly Removal
- Low and Reverse Band Servo Piston Assembly Removal
- Low and Reverse Band Servo Piston Pin Check
- Manual Shift Shaft Removal
- Parking System Components Removal
- Front End Play Check
- Rear Unit End Play Check
- Transmission Fluid Pump Removal
- Turbine Shaft and Overdrive Carrier Assembly Removal
- 4th Clutch Assembly Removal
- Forward Clutch Assembly Removal
- Direct Clutch Assembly Removal
- Manual 2-1 Band Assembly Removal
- Intermediate Clutch Assembly Removal
- Center Support and Gear Unit Assembly Removal
- Low and Reverse Band Removal
- Output Shaft Seal Removal
- Transmission Case Inspection
- Output Shaft Seal Installation
- Parking System Components Installation
- Low and Reverse Band and Output Shaft Thrust Washer Installation
- Center Support and Gear Unit Assembly Disassemble
- Output Carrier Pinion Gear End Play Measurement
- Reaction Carrier Pinion Gear End Play Measurement
- Reaction Carrier Assemble
- Center Support Assembly Disassemble
- Center Support Assembly Reconditioning Repair
- Center Support Assembly Assemble
- Center Support and Gear Unit Assembly Assemble
- Center Support and Gear Unit Assembly Installation
- Center Support Bolt and Transmission Fluid Cooler Pipe Fitting Installation
- Intermediate Clutch Assembly Installation
- Intermediate Clutch Piston Travel Check
- Manual 2-1 Band Assembly Installation
- Direct Clutch Assembly Disassemble
- Direct Clutch Assembly Assemble
- Direct Clutch Assembly Installation
- Direct Clutch Piston Travel Check
- Forward Clutch Assembly Disassemble
- Forward Clutch Assembly Assemble
- Forward Clutch Piston Travel Check
- Forward Clutch Hub Assemble
- Forward Clutch Assembly Installation
- 4th Clutch Assembly Disassemble
- 4th Clutch Assembly Assemble
- 4th Clutch Piston Travel Check
- 4th Clutch Assembly Installation
- Overrun Clutch Assembly Disassemble
- Overrun Clutch Assembly Assemble
- Overrun Clutch Piston Travel Check
- Overdrive Carrier Pinion Gear End Play Measurement
- Overdrive Carrier Assembly Disassemble
- Overdrive Carrier Assembly Assemble
- Turbine Shaft Disassemble
- Turbine Shaft Assemble
- Overdrive Carrier Assemble
- Turbine Shaft and Overdrive Carrier Asembly Installation
- 4th Clutch Plate Installation
- Transmission Fluid Pump Disassemble
- Transmission Fluid Pump Cover Disassemble
- Transmission Fluid Pump Cover Assemble
- Transmission Fluid Pump Body to Gear Face Clearance Check
- Automatic Transmission Fluid Pump Body Disassemble
- Transmission Fluid Pump Body Flatness Check
- Transmission Fluid Pump Body Assemble
- Transmission Fluid Pump Assemble
- Transmission Fluid Pump Installation
- Manual 2-1 Band Servo Piston Assembly Disassemble
- Manual 2-1 Band Servo Piston Assembly Assemble
- Manual 2-1 Band Servo Piston Assembly Installation
- Low and Reverse Band Servo Piston Assembly Disassemble
- Low and Reverse Band Servo Piston Assembly Assemble
- Low and Reverse Band Servo Piston Assembly Installation
- 3rd and 4th Clutch Accumulator Housing Removal
- 3rd and 4th Clutch Accumulator Housing Disassemble
- 3rd and 4th Clutch Accumulator Housing Assemble
- Control Valve Body Assembly Disassemble
- Control Valve Body Cleaning and Inspection
- Control Valve Body Assembly Assemble
- 3rd and 4th Clutch Accumulator Housing Installation
- Control Valve Body Assembly Installation
- Wiring Harness Installation
- Transmission Fluid Filter Assembly Installation
- Transmission Fluid Pan Installation
- Input and Output Speed Sensor Assembly Installation
- Case Extension Assembly Installation
- Torque Converter Assembly Installation
- Holding Fixture Removal
- Description And Operation
- Automatic Transmission Hydraulic Diagrams
- Park or Neutral - Engine Running
- Overdrive Range, First Gear
- Overdrive Range, Second Gear
- Overdrive Range, Third Gear - Torque Converter Clutch Applied
- Overdrive Range, Fourth Gear - Torque Converter Clutch Applied
- Overdrive Range, 4-3 Downshift
- Overdrive Range, 3-2 Downshift
- Manual Third Gear
- Manual Second Gear
- Manual First Gear
- Reverse
- Fluid Passages
- Pump Body Fluid Passages (Pump Cover Side)
- Pump Cover Fluid Passages (Pump Body Side)
- Pump Cover Fluid Passages (Case Side)
- Case Fluid Passages (Pump Cover Side)
- Case Fluid Passages (Control Valve Body Side)
- Spacer Plate to Case Gasket with Accumulator Housing Gasket
- Spacer Plate
- Spacer Plate to Control Valve Body Gasket
- Control Valve Body Fluid Passages (Case Side)
- Automatic Transmission Hydraulic Diagrams
- Special Tools And Equipment
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.